Design and Implementation of Planck Blackbody Trajectory High Imitation Natural Light Algorithm

The research content is based on the existing digital control technology, colorimetry and photometry technology, using the digital characteristics of semiconductor light-emitting diode, design an algorithm to maximize the simulation of natural light. Based on the characteristics of natural light spectrum and the change rule of natural light along the blackbody track with time, the light source involved in light color regulation (whose color coordinate value is the coordinate corresponding to the end point of the target mixing area on the known blackbody track) is calculated with the linear equation based on Glassman's color mixing law. The calculated brightness coefficient is used as the input parameter of the dimming control unit. To achieve high quality and smooth light output along the Planck blackbody trajectory. So that the output target light is closer to natural light, both in terms of spectrum distribution, chroma, light intensity change rhythm are more similar to natural light, more suitable for human physiological and psychological needs.